This page no longer updated from 31 October 2001. Latest version can be found at Kosmos A-2

Gross Mass: 8,595 kg. Empty Mass: 840 kg. Thrust (vac): 10,760 kgf. Isp: 352 sec. Burn time: 250 sec. Propellants: Lox/UDMH Isp(sl): 220 sec. Diameter: 1.6 m. Span: 1.6 m. Length: 7.8 m. Country: Ukraine. No Engines: 1. RD-119 Status: Hardware. Other designations: S1.
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Last update 12 March 2001.
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© Mark Wade, 2001 .